add new file menu item
fix test for editing support
Merge branch 'file-editing'
core-5044 core-5045 add new end points for file edit and save
CORE-5042 Updates for DiskResourceInfo fields.

Modified and Created fields are now Dates rather than strings.
core-5044 add refresh qstring to tree service
core-4914 show info about filtered item
core-4934 fix permissions selection drop down.
core-5030 changes for download contents
CORE-4960
CORE-4876
CORE-4876
CORE-4876
CORE-4876
CORE-4876: Fleshing out unit tests for search UI
CORE-4876: Continuing search-related unit test dev
CORE-4876: Ongoing unit test development
CORE-4876: ongoing unit test dev
CORE-4976